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What are coal resources?

In-place coal resources include in-place tonnage estimates of total coal volumes. In-place resources are those quantities that are estimated, as of a given date, to be contained in known deposits prior to production. The quantity which can be technically produced or mined, may be significantly less than the volumes estimated to be in place.

Technically recoverable resources are calculated using those coal beds from the total in-place resources that are deemed both shallow and thick enough to be recoverable using current surface mining technology.